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No. 6l9,673. Patented Feb. l4, I899.

-w. L. mouse.- SGBEW TI-IBEADING MACHINE.

(Application filed Sept. 15.1698.)

(N0 Model.)

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TNESSES: INVENTCRI 4V6 WW5 CZazwefl THE NORRIS PEYERS co.. PHorO-Llrum, wumnaron. b. c.

UNITED STATES PATENT OFFICE.

WILLIAM L. OLOUSE, OF TIFFIN, OHIO, ASSIGNOR TO THE NATIONAL MACHINERY COMPANY, OF SAME PLACE.

SCREW-THREADING MACHINE.

SPECIFICATION forming part of Letters Patent No. 619,673, dated February 14, 1899.

Application filed S pt mb r 15, 1898- Serial No. 691,024. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM L. OLoUsE, a citizen of the United States, residing at Tiffin, in the county of Seneca and State of Ohio, have invented new and useful Improvements in Screw-Threading Machines, of which the following is a specification.

My invention relates to machines for screwthreading rods, bolts, and other similar objects; and its object is to provide improved means for gripping the article to be threaded and feeding the carriage which carries the same to the cutting-head.

The invention consists in the novel construction and combination of parts hereinafter fully described and claimed.

In the accompanying drawings, Figure l is a side elevation of a screw-threading machine constructed in accordance with myinvention. Fig. 2 is a plan view of the same. Fig. 3 is a sectional view on the line a: 0:, Fig. 2. Fig. 4 shows a face view and an edge view of the rack or cog wheel for feeding the carriage to and from the cutting-die. Fig. 5 shows similar views of the wheel for actuating the vise to grip the article to be threaded. Fig. 6 shows an edge and a side elevation of the opcrating-lever. Fig. 7 is a detail view of the stop-pin.

The reference-letter A designates the bedframe of a screw-threading machine provided with a head-stock B. The letter O designates the die-head, carried by the spindle D, which is rotated by any suitable means. The parts so far described form no part of the present invention and may be of any ordinary or suitable construction. .The said bed-frame is provided with ways a at opposite sides,upon which the carriage F travels, being provided with gibs b for holding it in place.

The letter E designates a rack-bar secured to one side of the frame A.

The letter I designates a right and left hand screw extending transversely across the carriage and having one end reduced and screwthreaded, on which fits a correspondinglythreaded thimble L, which is journaled in a bracket K, secured to the carriage F. A nut J fits on the end of said screw and forms a collar for bracket K and also looks the thimble. Engaging with said screw are two laterally-movable vise members G,provided with jaws G. The jaws are provided with hardened-steel grips H for holding the article or object to be threaded. The letter M designates a collar secured to said screw, and abutting against the same is a rack or cog wheel N, which engages with the rack-bar E. Upon its outer face this wheel is provided with projections c, with which a lever, hereinafter described, is adapted to engage. This wheel is journaled on the said screw, so as to rotate thereon. Secured to the end of the screw is a wheel P, provided with projections 71. on its inner face or side, with which said lever is also adapted to engage to turn the screw and move the vise members to and from each other. This wheel has a boss. 11 formed at the inner end of its hub, which abuts against the hub of the rack or cog Wheel. Loosely j ournaled on said boss is a lever R for operating said wheels. The opening in said lever through which said boss passes is of such a size as to allow the lever to be turned or shifted inwardly or outwardly, as shown in Fig. 3. Formed on opposite sides of the lever, below the screw, are projections 9, so proportioned as to fit loosely between the adjacent sides or faces of the wheels N and P. Above the screw the lever is formed with a rectangular shoulder f, which is adapted to engage with the projections on the wheel N or P, according to the direction in which the lever is shifted. The lever at its lower end is provided with an angular tailpiece Z, which is adapted to engage with a curved pin 0 to throw the lever into a vertical position and out of engagement with the projections on said wheels.

The operation is as follows: The article or object to be threaded is placed between the grips H and the lever B shifted so as to bring the shoulder f into engagement with the proj ections on the wheel P. By now turning said lever on its fulcrum the screw I will be rotated, causing the vise members to approach each other and the grips to securely grasp and hold the article therebetween. The 1ever is then shifted in the opposite direction, as seen by the dotted lines, Fig. 3, so that the said shoulder will engage with the projections e of the wheel N. By now turning the lever the wheel N will be rotated, and its cogs or racks, engaging with the rack-bar E, will cause the carriage to be fed to the cuttingdie. A reverse movement of the lever will cause the carriage to travel away from the die. When the carriage has thus been fed toward the cutting-head, the latter, engaging with the bolt, will feed the latter and the carriage forward as the threads are out. If during this operation the lever L should be left in engagement with the wheel N, there is liability of the lever striking some fixed part'of the machine and resisting the action of the thread-cutting operation. This will result in the breakage of the machine or the spoiling of the work. This I obviate by providing the stop-pin O and the tailpiece for the lever. As the bolt and carriage are drawn forward by the thread -cutting operation the wheel N, engaging with the rack-bar, will be turned, carrying with it the lever until the tail of the latter comes in engagement with the curved stop-pin, when the lever will be thrown into a perpendicular position and out of engagement with the wheel.

Having thus fully described my invention, what I claim is- 1. The combination with the carriage, the right and left hand screw and the vise members working on said screw, of the wheel loosely journaled on said screw provided with projections on one face, the Wheel fixed to said screwand also provided with projections and the shifting lever mounted between said wheels and adapted to contact with the projections of either of the same, substantially as described.

2. The combination with the frame, the rack-bar, the carriage, the right and left hand screw and the vise members, of the cog-wheel journaled on said screw having projections on its outer face or side, and the wheel secured to said screw having a boss at the inner end of the hub and provided with projections on its outer face or side, and the lever loosely journaled on said boss provided with opposite projections and with a shoulder adapted to engage with the projections on said wheel, substantially as described.

3. The combination with the frame, the rack-bar secured thereto, the carriage, the right and left hand screw having one end reduced and screw-threaded, the thimble, the vise members, and the collar on said screw, of the wheel journaled on said screw having projections on its outer face or side, the wheel secured to the screw having a boss on the inner end of its hub and provided with projections on its inner face or side, the lever loosely jourualed on said boss having a shoulder adapted to engage with said projections and provided with a tailpiece and a stop-pin secured to the carriage, substantially as described.

4. In a bolt-threading machine of the character described, the combination with the wheels having projections on their adjoining faces, of the shifting lever adapted to engage with either of said wheels, substantially as specified.

5. Ina bolt-threading machine of the character described, the combination with the wheels having projections on their adjoining faces, the right and left hand screw, the vise members and the boss on said screw, of the shifting lever loosely mounted on said boss provided with a shoulder adapted to engage with said projections of eitherof said Wheels, substantially as specified.

6. In a bolt-threading machine, the combination with the carriage and the curved stoppin secured thereto, of the cog-wheel having projections on one side or face, the rack-bar and the shifting lever so mounted as to contact with the projections on said wheel having a tailpiece adapted to strike said pin, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM L. OLOUSE. Witnesses:

JNo. K. Bonn, ANNA E. DORSEY. 

